System for stopping machines



(No Model.) 2 Sheets-Sheet 1.

W. H. KILBOURN. SYSTEM FOR STOPPING MACHINES.

No. 422,948. Patented Mar. 11, 189 0.

333% A whom M134 N. PETERS, Pnomlimo m hen Washington D. c.

(No Model.) 2 Shets-Sheet 2. W. H. KILBOURN.

SYSTEM FOR STOPPING MACHINES. No. 422,948. V Patented Mar. 11 1890'.

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U ITED STATES PATENT OFFIC \VASHINGTON H. KILBOURN, OF OLEAN, NElV YORK.

SYSTEM FOR STOPPING MACHINES.

SPECIFICATION forming part Of Letters Patent No. 422,948, dated March 11, 1890.

Application filed January 19, 1889- Serial No. 296,870. (No model.)

' gus and State of New York, have invented certain new and useful Improvements in Electrical Systems for StoppingMachines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which itappertains to make and use the same.

' My invention relates to an improvement in automatic stop motions for machines.

The object is to provide a system of mechanism whereby machinery may be stopped almost instantaneously at any predetermined time.

WVith this end in view my invention con sists in certain features of construction and combination of parts as willbe hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 represents a portion of one form of automatic stop mechanism applied thereto, and Fig. 2 represents a modification of frame. Fig. 3 is a view showing the cut-off mechanism connected with a steam-engine, and Fig. 4 is a View of the clutch.

For the purposes of convenience I have shown the improvements applied to the stop mechanism of a knitting-machine, (shown in Patent No. 390,375, granted to me October 2, 1888;) but I do not confine the application of same to any particular machine, as it is applicable to numerous other machines, and can be used thereon with good results.

A represents the bed of the machine and c the main driving-shaft mounted therein and provided with gearing for transmitting motion to the moving parts of the machine. Loosely mounted on the shaft 0, at or near one end, is a band-wheel B. Rigidly mounted on the shaft is a sleeve D, the edge of I which, with the adjacent edge of the pulley, forms a clutch e, the tendency of WlllCllldttGI being to norm ally hold the band-wheel locked to the shaft. The sections of the clutch e are disengaged by means of theshifter-bar f, which is mounted in suitable bearings and provided. with elongated slots or similar means, through which pins Gfillelld and permit the bar to slide endwise. One end of this bar terminates in a fork P, which is beveled on its concaved edge and adapted to enterbetween the hub of pulley B and the sleeve D in disconnecting the parts of the clutch. The shifter-bar f is attached at its rear end to the lever g, which latter is fulcrumed at g, on top of bed or block A, and connected near its outer free end to the toothed plate h, pivoted to the rocking bar i.

A barj is located above shaft 0, and is provided on its lower face with teeth adapted, when the bar is lowered, to engage the wheel d, rigidly secured on the shaft 0, and slidebar j rearwa'rdly. This bar is provided with a projecting pin or lug j, which is adapted, when the bar j is shifted rearwardly, to engage standardt' and tilt same rearwardly, and the standard in turn moves lever g, which latter moves the shifting-barf forwardly to disengage the clutch-sections and leave the shaft 0 free to come to a standstill and the wheel B free to be revolved by the drivingbelt from the engine until the latter stops.

Pivoted in a suitable standard X is a bent lever it, provided at one end with an ofiset or too 1;, to receive the end 17'' of the raclcloar and hold the same normally supported out of contact with the pinion (Z. The opposite end of the bent lever 25 is provided with a softiron armature 25, adapted to be attracted by an electro-magnet m, located in proximity thereto, said armature being maintained normally out of contact with the magnet by means of the spring a. One end of the helix of the magnet m is connected by means of a wire Z with one pole of a battery 71:, while the other end of said helix is electrically connected with the opposite pole of the battery by wires 3 Z, and includes a circu-itcloser Y. This circuitcloser comprises two contactsprings q r and revolving arms 19. The arms 13 are secured to and carried by the arboro of a clock-work a, said arbor being the one upon which the hour hand is usually mounted. The c0ntact-spring q is fixed to the frame of the clock, so that its free end will bear with a yielding pressure upon the arbor 0 and thus connect the arms p with one pole of the battery. The contact-spring r is fixed to the cloclcframe, and projects into the path of the according to the number of stops it is desir-' ous to make in twelve houis or during one revolution of the arbor 0. One of the rackbars j is pivoted to one end of a lever 10, and the latter rocks on a shaft or post w. The

lever w is so arranged that one end will be shaft, a pinion thereon, a rack-bar suspended in position to operate theforked arm 10*, connecting with the throttle-valve w of the engine It will be seen that the magnet m is in a normally-open circuit and the lever tpermitted to hold the rack j away from thepinion d. c When one of the arms p comes into contactwith the contact-spring r, the circuit is completed, the armature t attracted by the magnet m, and the rack released and permitted tobe engaged by the pinion' d. Thus it will be seen that as soon as'the rack is dropped its engagement with the teeth of the pinion d will cause it to reciprocate and the clutch on shaft 0' will be separated, through the intervention of the standard t, lever g, and'shifter-bar f, and the shaft 0 allowed to come to a standstill. At the same time the lever w will be vibrated and the throttlevalve of the engine closed. I r t Having fully described my invention,'what I claim as new,and desire to secure by Letters Patent, is' r The combination, witha driven shaft, a battery and electro-magnet, and a bar-supporting device controlled by said electromagnet, of abar suspended above the shaft and adapted when dropped to be moved by said shaft, and devices actuated by the bar for cutting oif the driving-power from the shaft, substantially as set forth.

2. The combination, with an actuatingshaft, a pinion thereon, a suspended rack-bar,

ing device actuated by the magnet, and devices actuated by the rack-bar for operating the clutch, substantially as set forth.

3. The combination, with an actuatingover the pinion, and clutch mechanism and unclutching mechanism adapted to be operated by the rack-bar, of a hanger supporting the irack-bar, a magnet for actuating the hanger, and means whereby an electric circuit, in-. jclud'ing the magnet, maybe opened or closedat predetermined intervals, substantially as set forth;

4. In a system for stoppingengines'the combination, with a machineand an engine,

of an electro magnet, a circuit-closer, an electric circuit including said magnet and circuit-closer, clock-work for actuating said circuit-closer', and devices controlled by .the electro-magnet whereby the power will be cut off from the machine at certain predetermined intervals.

In testimony whereof have signed this specification in the presence of two subscribing witnesses. V V

WASHINGTON H. KILBOURN. Witnesses I F. S. BLAKESLEE, J. K. FOOTE, J r. 

